Detachable wheel



Dec. 11, 1923. 1,477,079

L. ROUANET DETACHABLB WHEEL Filed D66. 10 19,19

1 1l el' e a4 a L L Figi Patented Bec. 11, 1923.

UNITED STATES Wien PATENT ,or-Fics LOUIS RO'UANET, OF IVR-Y PORT,FRANCE, ASSIGNOR T0 COMPAGNIE DAPPLICA-- TIONS-IVIECANIQUES, OF IVRYPORT, SEINE, FRANCE.

DETACHABLE WHEEL. i i /'Y Application filed December 10, 1919. SerialNo. 343,755.

To all whom it may concern.'

Be it known that I, LOUIS RoUANnT, citizen of the Republic of France,residing at il2 Rue Franklin, Ivry Port, Seine, in the Republic ofFrance, have invented new and useful Improvements in Detachable Wheels,or' which the following is a. specification.

This invention relates to detachable wheels and concerns locking mea-nstherefor, which are visible from the outside of thevehicle. It consistsin the use of a drum or hub stamped or hammered directly from a sheet iof metal of uniform thickness, the said drum not presenting, whenfinished, any superthickness in its different surfaces and requiring noworking of the inner periphery. The latter present two cones, one ofwhich isy centred on a corresponding tapering portion of a false hub andthe other constitutes a supporting surface for a corresponding coneprovidedon 'the tightening nut. The said drum which is stamped in asheet of metal of minimum thickness receives at a suitable spot astrengthening plate on which is provided the driving device. This platecan be secured to the drum by means of rivets or directly by means ofthe wheel spokes.

It also consists in vthe arrangement of the locking means which is ofextreme simplicity whilst assuring reliable locking which can be readilyseen.

It further consists in the provision of a Wrench for operating thetightening nut ot' the said wheel, and in the method of dislnounting thelocking device which permits oi' quickly replacing any part thereof incase of 'damagel It will be more clearly understood by referring to theannexed drawing which is only gi ven, ot course, by way of exampleand inwhich:

Fig. l isl a view in section of a front hub of detachable wheelconstructed according to the invention.

Fig. 2 represents in section the front part of the hub during theloosening operation.

Fig. 3 is a. view in cross section showingthe manner of removing the nutand lock.

The drum a is beaten or stamped out of a sheet of metal of uniformthickness, it has no superthickness, no turned part, nor driving teethor keying.

The driving of the false hub o by the drum or hubo is ensured by theaddition to the said drum of a crown-wheel c on which is provided anumber of teeth c which engage in corresponding teeth o of the false hubo. The crown-wheel c is fastened on the drum a by means of rivets, boltsor screws, the numberof the-'latter may be reduced, but in [this casethe crown-wheel c carries together with the drum a the wheel spokes d;this latter construction is preferable as it greatly increases thecohesion between the crown-wheel c and the. drum a.

The tightening of the hub o on the false hub Z2 is secured by means'of anut el inside which the locking means are disposed; the said nut e isprovided at its inner portion with a taperingend v a internallyscrewthreaded so that it can be `screwed on a corresponding threadedpart b2 -cut at the outer end ot the false hub b. The tapering part c ofthe nut c abuts against a. corresponding cone a of the drum a. and'tightens and centres the latter by means of another part o2 tapered inthe opposite direction, on a corresponding cone b3 provided on the innerpart or the false-hub o. The drum a has on its inner periphery of its-outerl edge and over its whole circumference a number o'locking teetha3 in which can be engaged a tooth or a small toothed quadrant carriedby the locking device yof the tightening nut.

The tightening nut e is bored ldiametrically as at e2 and e3; In thehole e2 slides a round-headed bolt g, which has anarm g situated in thesame plane and which can also slide in a corresponding' hole e4 ol thenut e. The bolt g is `pushed outwards by a spring L guided on a rod iwhich with its end s engages in a blind holeg3 or" the bolt g, thebranch g of the bolt g has at itsv outer end a tooth or toothed quadrantg2 which engages, under the pressure of the spring 71 between the teetha3 of the drum a. v

The size of the bolt g is such that it passes beyond the surface of thenut when the tooth g? is in engagement with the teeth as. The spring 7Lis of suiiicient strength for the locking to be effected in a positivemanner; loosening of' the nut when it is fully screwed up thereforebecomes impossible.

The advantage of this arrangement is that it allows the use of a verysimple false hub, the locking means being entirely borne by thetightening nut.

The spanner or Wrench employed for the operations of tightening andloosening the drum on the 'false hub is so devised that when it isfitted on the nut e it automatically ushes back the bolt g, thusdisengaging the tooth g2 from the 'teeth fr". l.fi/hen the sets ot teethare not in engagement the inanipulation is permitted.

The looking device carried by the nut c '1 f simple, and the partsthereot' are so arranged that they cannot become disengaged from oneanother' nor detached from the nut.

For removing the looking device mounted within the nut a, one i rayproceed asvfollows:

By means ot any tappet or plunger the bolt g is pushed (Fig. 3) untilthe edge passes beyond the si'irtaee 05 ofthe uut e to a sufficientextent `to allovv of engaging a small dat forl uA which i `ntains in theobtained position the gui( fr rod i ot the spring in'spite of the t The.rod -z has a narro length; the said narrovfn diameter than the hole eisioii ont the latter. if fi ot' siitahle having a less lows the rod a'to he inclined until the bolt through the interior ot the nut can be dngaged,

rod e' freely resume its position, to Withdraw the fork u and the saidrod 'i can be easily vithdrawn through the hole @2 ot the nut e. Theiiiing of the looking device inside the nut is Cttee-ted inversely inalsimilar manner.

rfhe looking device above described presents as an advantage itsvisibility from outside and further allows in oase of shocks ordeteriorations the bo-lt to be easily disengaged 'from the teeth ot lthe drinn by means of a tool or punch, order vto eli- 'feet thereplacement ot thel deteriorated member. y

The spanner Z can be Obtained by stamping or any other suitable process;it coinprises a cut-outpart Z1 corresponding to the L lliy, is thennothing further to do than lot the? shape ot the sides ot the tighteningnut e, and lingers Z2 and Z3, the latter being subjected to the alc-tionot al spring Z1 which 'tends to press it eonstantly into the bottom of agroove e6 of the nnte. A small tonguepieoe Z5 suitably curved enablesthe Spanner to be disengaged 'from the tightening nut. T he said spannerZ also has note-hes ZG for the purpose. ot receiving the end of the rodz' when the bolt g is pushed back inside the nut by the spanner.

Having now described my invention, what l Claim as new and desire tosecure by Letters Patent is:

l. A detachable Wheel construction comprising in combination a. falsehub, a Wheel hub, a nut screwed upon the Jfalse hub and adapted tosecurely hold the wheel hub on the false hub, looking teeth provided onthe Wheel hub, a spring Controlled rod carried in the nut and a lookingbolt detaehably mounted on said rod and adapted to engage into saidlooking teeth1 the locking bolt being adapted to protrude in itsoperative position through the wall of the nut and the rod being somounted'in the nut that it may be swung out of the'ivay of the lookingbolt.

Q. A detachable Wheel construction comvvprising in eombinationa falsehub, a. Wheel hub, a nut sorewedfupon the false hub and adapted tosecurely hold the W ieel hub on the false hub, locking teeth provided onthe Wheel hub, a spring Controlled rod carried in the nut and alooking., bolt detaohably mounted on said rody-and adapted to engageinto said looking teeth, the locking bolt being adapted to prot-rude inyits operative position through the wall of the nut and the rod being somounted in.4-` the nut that it may swung out of the. Way of the lockingbolt, the rod being provided With means whereby it may be maintained inits disengaged position.

In testimony whereof have signed myy naine t0 this specification.

LOUIS ROUANET.

